Thanks for the replies! I've used Win, Rem, Hertinberger, RA61, Federal, Hornady, LC brass for the load development. I have approx. 1500 cases of once fired federal, 3000 cases of RA61, and 1000 cases of Hertinberger. The rest are just samples for checking to see how they shoot. I've tried RCBS x-dies, full and small base, Forster benchrest Fl dies, and Redding small base with neck sizer, I use the Forster benchrest seater, it is excellent in terms of runout. I've tried 41g to 43g of Re15, Varget, 4064, I4895,H4896 in all the cases, my Chrono readings say that my sd and ad are slightly above 10 with sd around 16. I've stayed with sierra bullets, 168 and 175 with no real difference in groups. I uniform the primer pocket and debur the flashhole, I turn the case 1/3 of a turn when I am seating, and turn the case 1/2 turn when sizing. I also use the RCBS case mate to debur and chamfer, its excellent. I use Gold Medal Primers, and win primers. I weigh my cases. I weigh the charge, Have tried seating depth changes but seems to be happiest with 2.804. Its a Krieger heavy with 1-10, mcmillan stock, rader trigger, Wolf springs, Leopold 10X tactical scope, Arms 18, sadlak spring guide. Looking back into my notes it seems that Federal brass has been the most accurate, but I have alot of RA61 and it lasts longer, the federals loose the primer hold after 4 loadings, so my development as of late has revolved around these cases, and they seem to be of good quality. I'm doing something wrong, my standard wieght M1a shoots 1.5" with FGMM 168s all day with a crummy GI fiberglass stock, but I feel we might be on the right track with case sizing here, I will find out shortly when I head to the range with my latest batch, last night I sized Federal and Ra61 to 1.635, with the forsters and Redding dies. Thanks again!